[Thanks to Umbra]The War on Superman’s Underpants, article.
When creating - and outfitting - the first superhero, Shuster was starting from scratch, and the closest version to what he had in mind was circus strongmen. This makes sense to me. Of, course, the modern argument against super-briefs is that old-time-y strongmen don't exist anymore, and today no one knows what they looked like or why superheroes are dressed like them. So take off those knickers, right?
I say thee nay!
I agree. If for no other reason than they have not yet managed to make a new-age costume which does not look silly or ugly. The latter applies in my mind to what's apparently the costume in the next Superman movie, ugh:
Much as I often favor grey as an artist, for the neutrality, on a superhero costume, it really does not work. At least not on one like Superman, whose very essence, due to his invulnerability and his symbolism of Hope, is meant to be as flashy as possible.
Admittedly it is very difficult to make the comic book costumes translate well to the higher reality of movies. I don't think they really have found the formula yet. Batman perhaps comes closest (I just watched Dark Knight Rises, good one), though I think they tend to over-complicate them.